Trolley.



0. w. BRENIZER.

TROLLEY. APPLIOATION FILED APR. 21, 1905.

Patented Oct. 26, 1909.

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UNITED STATES PATENT OFFICE,- A A ORSON W. BRENIZER, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO JAMES FRANKLIN AND ONE-THIRD T0CHARLES G. WILFONG, OF PHILADEL- PHIA, PENNSYLVANIA.

Specification of Letters Patent. A

TROLLEY.

Patented Oct. 26, 1909.

To all whom it may concern:

Be it known that I, ORSON IV. Bnnmznn, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented certain new and useful Improvements in Trolleys, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, of which Figure 1 is a side elevation,showing the device in the normal position, when the trolley wheel is incontact with the conductor wire. Fig. 2 is a plan view of Fig. 1. Fig. 3is a sectional side elevation, showing the device in a position occupiedwhen the trolley wheel is out of contact with the conductor wire. Fig. 4is a section on line m-w, Fig. 3. Fig. 5 is a section on line y-y, Fig.3.

This invention relates to that kind of trolley wherein the pin uponwhich the trolleywheel is pivoted is adapted to slide vertically, orthereabout, in a slot or guide-way of the trolley-head, against thestress of a spring that tends to maintain the said wheel in the elevatedposition there being also a bifurcated guard pivoted to thetrolley-head, with which guard the said pin is connected in a manner tocause it, the guard, to swing on its pivot by the descent or elevationof the trolley-wheel.

The invention consists of certain features, designed to avoid certaindefects in trolleys of the kind recited, as hereinafter particularly setforth.

In the drawings, 1 designates the trolleypole; 2, the bifurcatedtrolley-head thereon; 3, the grooved trolley-wheel, the ends of theshaft or pivot-pin, 4, of which are seated in boxes or blocks, 5, Fig.3, that are slidable vertically in guide-ways of slots, 6, in the sidesof the head 2. These blocks, and consequently the wheel, 3, tend tooccupy an extreme elevated position in said slots, through the stress ofcoiled springs, such as 7 that encircle a pin, 8, depending from each ofthe blocks, 5.

9 is a bifurcated guard, consisting of two limbs, 9 9 on opposite sidesof the trolleyhead. One end of each limb, is pivoted on a pin or stud,10 of the trolley-head, a suitable distance forward of thetrolley-wheel, and the other end extends backward beyond said wheel andflares outwardly as seen in Fig. 2. Said limbs are loosely, pivotallyconnected to slots 9 (shown in Fig. 4, and in dotted lines in Fig. 3)through which said pin 4 passes, whereby vertical movements of thewheel,

and hence pin 4 and blocks 5 will, against stress of springs 7, impart acorresponding movement to guard 9 on its pivot 10.

Normally, the trolley-wheel rides against the conductor wire, 11,through the. stress of the usual spring acting upon the trolleypole, andso depresses said wheel against the stress of spring, 7; consequentlymaintaining the guide, 9, in the depressed position, as in Fig. 1; butwhen the wheel jumps the wire,

the guard is rotated to the elevated position; 7 O

that is, in which it is adapted to perform its function as a guard.

The foregoing describes generally the trolley devices that have beenknown and described. In thesedevices, as heretofore constructed, whenthe trolley wheel jumped from the wire, and the guard assumed theelevated position, it remained in that position until, again depressedby the wheel coming into contact with the wire. During this interval,the upwardly projecting free ends of the guard were liable to strikeagainst a cross-stay wire, or it might be a branching wire from onestreet or road to another, and

so break such wire, or perhaps the guard, or

trolley-wheel is in contact with and pressing against the conductorwire, the wheel and the guard will occupy the depressed position, as inFigs. 1 and 2, at which time the wire will not be in contact with thecrossbar, or roller, 12. If now, the said wheel should jump off thewire, it will instantly, by the force of the springs, 7, move upwardlyand consequently the guard will be rotated to the elevated position asin Fig. 3,

the wire being between the limbs of the guard. As the trolley pole seeksto recover its normal position through the stress of the spring actingthereon, the cross-bar or roller, 12, will be caused to impinge againstthe under side of the wire, 11, as in Fig. 3, and 11-0 the pivot pin 4of the wheel, by means of This I do by connecting the 90 so almostinstantaneously depressing the guard, until, finally, when the trolleywheel seats against the wire, it, the guard, re-assumes the normalposition of Figs. 1 and 2. In order to direct said wire into the grooveof the trolley-wheel when the guard is resuming its normal position asdescribed, I provide on the inner side of each of the limbs of thelatter, an inclined projection, 13, whose inner end extends to, orslightly within, the edge of the periphery of the wheel, as seen in Fig.2.

In order to hold the limbs of guard, 9, in place,-I employ nuts, 15, onscrew-threaded ends of the pivot-pins, 10, and also nuts, 16, onthreaded ends of the axis or pivot-pin, 4 of the trolley-wheel. And inorder that the bar or roller,12, may also act as a brace or stay for theguard-limbs, I would usually make said bar or roller of two parts, oneof which constituting the bar proper is rigidly secured at each end tothe said limbs, and the other part, marked 12, being a sleeve freelyrotatable on said bar. I also sometimes cut off the ends of the limbs, 99 a short distance beyond the bar or roller, 12, so that said limbscannot, when in elevated position, possibly strike against'a cross-staywire, or a. branch wire. However, if the length of the part of the guardlimbs beyond the cross-bar or roller 12,be such that they extend abovethe plane of a cross-wire, or the like, when the conductor wire contactswith or is adjacent said cross-bar or roller, said limbs would not beliable to impinge against such cross-wire, as the instant the trolleypole moves upwardly, carrylng the cross-bar against the wire, the guardwill as new anddesire to secure by Letters Patent In a device of thecharacter'described, the

combination with springcontrolled pole having the head thereon, therotatable spring-controlled trolley-wheel mounted in said head andvertically slidable therein, the bifurcated guard pivoted to said headand pivotally connected to the axis of said wheel, and projectingrearw-ardly beyond the latter, the guide projections on the inner sideof the bifurcations of said guard, said projections extending over theedges of. said wheel and hai 'ing inclined guiding surfaces leading fromthe bifurcations toward the wheel and terminating inwardly of thelateral edges of the wheel, and the cross bar connecting saidbifurcations outwardly of said guide projectionsand positioned to engagea trolley wire in advance of said'wheel during the movement of the wheeltoward the wire, substantially as and for the purpose set forth.

In testimony whereof, I have hereunto affixed my signature.

ORSON WV. BRENIZER.

lVitnesses: V V i IVALTER C. PUSEY, IVM. I-I, SMITH.

